Commit 931c33b1 authored by Jason Wang's avatar Jason Wang Committed by Paolo Bonzini
Browse files

kvm: add tracepoint for fast mmio 



Cc: Gleb Natapov <gleb@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: default avatarJason Wang <jasowang@redhat.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent d3febddd

arch/x86/kvm/trace.h

+18 −0
Original line number Diff line number Diff line
@@ -128,6 +128,24 @@ TRACE_EVENT(kvm_pio, 
		  __entry->count > 1 ? "(...)" : "")

);



/*

 * Tracepoint for fast mmio.

 */

TRACE_EVENT(kvm_fast_mmio,

	TP_PROTO(u64 gpa),

	TP_ARGS(gpa),



	TP_STRUCT__entry(

		__field(u64,	gpa)

	),



	TP_fast_assign(

		__entry->gpa		= gpa;

	),



	TP_printk("fast mmio at gpa 0x%llx", __entry->gpa)

);



/*

 * Tracepoint for cpuid.

 */

arch/x86/kvm/vmx.c

+1 −0
Original line number Diff line number Diff line
@@ -5756,6 +5756,7 @@ static int handle_ept_misconfig(struct kvm_vcpu *vcpu) 
	gpa = vmcs_read64(GUEST_PHYSICAL_ADDRESS);

	if (!kvm_io_bus_write(vcpu, KVM_FAST_MMIO_BUS, gpa, 0, NULL)) {

		skip_emulated_instruction(vcpu);

		trace_kvm_fast_mmio(gpa);

		return 1;

	}

arch/x86/kvm/x86.c

+1 −0
Original line number Diff line number Diff line
@@ -8070,6 +8070,7 @@ bool kvm_arch_has_noncoherent_dma(struct kvm *kvm) 
EXPORT_SYMBOL_GPL(kvm_arch_has_noncoherent_dma);



EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_exit);

EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_fast_mmio);

EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_inj_virq);

EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_page_fault);

EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_msr);